Operations
Check what ground beef is in your freezer, USDA advises
The agency's food safety arm has been alerted that ground beef products possibly contaminated with E. coli have made it to market.
Food
Avian flu has been found in more animals and a human, prompting calls for diligence
Authorities say the contamination has spread to the nation's largest egg producer and a 12th dairy herd, but the impact on prices has yet to be seen.